MTA BUS MAINTAINER CHASSIS EXAM
1.
An EGO sensor used in a microprocessor - based control / diagnostic system
A. is perfectly linear
B. is unaffected by temperature
C. has two different output levels , depending on the fuel mixture
D. is unaffected by engine exhaust levels - CORRECT ANSWER-C. has two different
output levels , depending on the fuel mixture
2.
To what drive train component is the ring gear in the differential bolted ?
A. Drive pinion
B. Axle shaft
C. Differential case
D. Carrier - CORRECT ANSWER-C. Differential case
3.
What is transmitted by the slip rings on an automotive alternator ?
A. Alternating current to the field coils
B. Alternating current from the stator windings
C. Direct current from the field coils
D. Direct current to the alternator output terminals - CORRECT ANSWER-C. Direct
current from the field coils
4.
In automotive electronics , the fractional duration that ignition points are closed is known
as
, A. slip
B. gain
C. dwell
D. delay - CORRECT ANSWER-C. dwell
5.
A brake system's warning lights may be tested by
A. testing the bulbs with an ohmmeter
B. depressing the brake pedal and opening a wheel cylinder bleeder screw
C. jumping the wires at the brake distributor switch assembly
D. testing the system with an ammeter - CORRECT ANSWER-B. depressing the brake
pedal and opening a wheel cylinder bleeder screw
6.
Of the following procedures performed prior to grinding a valve seat , which should be
performed FIRST ?
A. Reaming
B. Adjusting
C. Cleaning
D. Replacement - CORRECT ANSWER-C. Cleaning
7.
What type of clutch is responsible for controlling a car's air conditioning compressor ?
A. Centrifugal
B. Free - wheeling
C. Magnetic - CORRECT ANSWER-C. Magnetic
8.
Which of the following is a DISADVANTAGE associated with onboard computer
diagnostic systems ?
1.
An EGO sensor used in a microprocessor - based control / diagnostic system
A. is perfectly linear
B. is unaffected by temperature
C. has two different output levels , depending on the fuel mixture
D. is unaffected by engine exhaust levels - CORRECT ANSWER-C. has two different
output levels , depending on the fuel mixture
2.
To what drive train component is the ring gear in the differential bolted ?
A. Drive pinion
B. Axle shaft
C. Differential case
D. Carrier - CORRECT ANSWER-C. Differential case
3.
What is transmitted by the slip rings on an automotive alternator ?
A. Alternating current to the field coils
B. Alternating current from the stator windings
C. Direct current from the field coils
D. Direct current to the alternator output terminals - CORRECT ANSWER-C. Direct
current from the field coils
4.
In automotive electronics , the fractional duration that ignition points are closed is known
as
, A. slip
B. gain
C. dwell
D. delay - CORRECT ANSWER-C. dwell
5.
A brake system's warning lights may be tested by
A. testing the bulbs with an ohmmeter
B. depressing the brake pedal and opening a wheel cylinder bleeder screw
C. jumping the wires at the brake distributor switch assembly
D. testing the system with an ammeter - CORRECT ANSWER-B. depressing the brake
pedal and opening a wheel cylinder bleeder screw
6.
Of the following procedures performed prior to grinding a valve seat , which should be
performed FIRST ?
A. Reaming
B. Adjusting
C. Cleaning
D. Replacement - CORRECT ANSWER-C. Cleaning
7.
What type of clutch is responsible for controlling a car's air conditioning compressor ?
A. Centrifugal
B. Free - wheeling
C. Magnetic - CORRECT ANSWER-C. Magnetic
8.
Which of the following is a DISADVANTAGE associated with onboard computer
diagnostic systems ?
